Improvement in wipers for drawing-rollers



J. M. DUNHAM.

Improvement in Wipers for Drawing-Rollers.

Patented Nov. 5,1872.

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Witness es.

n'rrnn STATES PATENT JOSEPH M. DUNHAM, OF HOLYOKE, MASSACHUSETTS.

IMPROVEMENT IN WIPERS FOR DRAWING-ROLLERS.

Specification forming part of Letters Patent No. 132,714, dated November 5, 1872.

To all whom it may concern:

Be it known that I, J OSEPH M. DUNHAM, of Holyoke, in the county of Hampden and State of Massachusetts, have invented certain Improvements in Wipers for Drawing-Rolls; and I do hereby declare that the following, taken in connection with the drawing which accompanies and forms part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

""in the combination of two wipers (upper or lower) with an open space or recess between them, also, in a wiper for the top rolls, having an opening or waste-receivin g space to receive the accumulating waste; also, in a surfaced wiper for the lower front roll, combined with a wiper for one or more top rolls.

Figure 1 represents a set of drawing-rolls with my improvements applied thereto, being a front view. Fig. 2 is a vertical section through line a; .r of Fig. 1. Fig. 3 is an end view, with a portion of the frame cut away to show the position for allowing the shifting of the middle rolls. Fig. 4 shows the front wiper and its attachments. Fig. 5 shows the upper wipers detached.

A is aframe or support for the rollers, a b 0 representing respectively the front, middle, and back top rolls, and a I) c the front, middle, and back lower rolls. The middle rolls I make adjustable relatively to the front rolls, they being for this purpose supported in an upright, B, which may be slidden forward or backward in ways or grooves d, to accommodate the drawing to long or short staple as the case may be. The rolls themselves I make in the usual way, the top ones being covered and the lower ones fluted. The front and middle ones most require a wiper, as the main work of drawing is done by them, the difference of velocity between the back and middle rolls being very slight, while the front rolls usually revolve six times (or more) faster than the middle ones, such velocity generating a large amount of electricity, which, with other causes acting upon the fiber, makes the accumulation of waste greatest upon the front pair of rolls, the lower one of which collects the most and needs the most efficient wiping. To do this, I make awiper, G, concave on its acting surface, as seen at e, and which surface, when the wiper is put to place, as shown, acts upon the roller on its under and its front sides, and extends forward and upward so as to reach to a point or line a little below its central horizontal line. The face of this concave, as also the wiping face of the other wipers hereinafter named, is lined with flannel, cloth, or any appropriate material having a coarse or fibrous surface. Projecting rearward from this wiper is an arm or arms, f, of sufficient length to extend under the lower middle roller in any position which may be occupied by the latter under its adjustments, and a cord, g, and weight h, passing over the lower front roll, as seen, holds the wiper in proper operative position, the arm or arms bearing upward against the second roll and keeping the wiper balanced and steady. In order to provide for applying to the arms an additional wiper, f, for the second under roller, I have but to fasten the same to the arms toward their rear ends, which may be done by rivets or otherwise; but inasmuch as it is better to adapt such wiper to the adjustments of the roll, I make slots in the arms, and, by means of set-screws t, am enabled to shift the wiper as may be desired, always, however,

leaving between the two wipers an open space to permit any waste to drop to the floor or be readily removed, as occasion may require, without the need of removing the wipers. Instead of three arms, as seen, the central one may be dispensed with. The upper wiper-plate D is provided with two wipers, 7c and Z, the former being permanently secured to the plate, and the latter, which is made of sufficient breadth to allow for reaching to the back roll if desired, is, by means of slots m and pins a, made adjustable to conform to the above-stated adjustability of the middle rolls. Between these two upper wipers isan open space, 0, to receive any accumulation of waste between these upper rolls, retained and gathered by the wiper. The I upper plate is readily removable, being simply held to place by being dropped upon two pins,

11, which enter holes in the plate the fixed or front wiper thus always when in use occupies the same position relatively to its front roll, and the waste space 0 also occupies always the same relative position, so that, however the adjustable wiper Z may be shifted, there is always a proper space for the waste to gather without obstruction to the rolls or danger to the sliver. This space may be cut entirely through the plate. The feature of adjustability both of the upper and lower rear wipers is applicable as well to concave asto flat wiping surfaces. In cases where there is no adjustment of the second or middle pair of rolls there need be no provision for adjustment of the rear wipers, whether they have flat or concave surfaces.

I claim- 1. A concave wiper for the lower front roll,

secured to supports which serve, in connection with the weight, to hold it in operative position, substantially as described.

2. Also, the combination of two wipers, upper or lower, with an open space between them, substantially as and for the purpose described.

3. Also, a wiper for the top rolls, operating as described, and having therein an opening or waste-receiving recess, 0, as specified.

4. Also, a cloth-faced wiper for the lower front roll, with or without a wiper for the lower middle roll, in combination with a wiper for one or more top rolls, substantially as described.

Witnesses: JOSEPH M. DUNHAM.

J. P. BUGKLAND, '1. MERRIGK. 

